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About the Role
Support the assurance of Target Outturn Cost (TOC) submissions for tunnelling and underground works at Sizewell C. This role focuses on reviewing cost and methodology alignment for complex underground construction, ensuring submissions reflect realistic delivery approaches and appropriate risk allowances.
Responsibilities
- TOC Assurance - Tunnelling
- Review TOC submissions for tunnelling works (TBM, shafts, SCL, underground structures)
- Assess cost build-ups in relation to construction methodologies
- Challenge assumptions on productivity, sequencing, and logistics
- Evaluate risk allowances specific to underground works
- Support procurement activities for tunnelling packages
- Review tender submissions and commercial proposals
- Assist in contractor engagement and clarification processes
- Ensure alignment between design, methodology, and cost
- Analyse cost drivers unique to tunnelling environments
- Identify commercial risks and opportunities
- Support benchmarking and assurance processes
- Work closely with engineering, design, and commercial teams
- Support technical and commercial assurance workshops
- Provide structured reporting and recommendations
- General understanding of the Capital Programme budget forecasting along with transition of programme elements back to influence of the costs and budgets
- General understanding of the capital projects and related risk identification, quantification and analysis
- General understanding of Quantitative Risk Analysis including Monte Carlo simulation for QSRA and QCRA
Requirements
- Minimum 12+ years’ experience in infrastructure, including tunnelling
- Background in Quantity surveying/commercial or Engineering with cost exposure
- Experience within contractor or specialist tunnelling environments
- Exposure to complex underground construction projects
- Understanding of TBM operations, shaft construction, ground risk and geotechnical considerations
- Ability to link construction methodology to cost
- Strong analytical and problem-solving capability
- Ability to challenge assumptions constructively
- Clear communication and reporting skills
- Humility
- Recognise the value brought from different cultures and experiences
- Be open to other’s points of view and ideas, be willing to debate and to compromise
Skills
- Tunnelling
- Target Outturn Cost (TOC) submissions
- Cost and methodology alignment
- Underground construction
- TBM operations
- Shaft construction
- Ground risk
- Geotechnical considerations
- Procurement
- Tender review
- Commercial proposals
- Risk analysis
- Quantitative Risk Analysis
- Monte Carlo simulation
Location
- Sizewell C
Work Type
- Onsite
- Part time
- Flexible
- Hybrid
Experience Level
- 12+ years
Education Level
- Degree in Civil Engineering, Quantity Surveying, or related discipline
- Relevant professional membership desirable
About the Company
- Mace combines construction expertise with consultancy to unlock potential in every person or project and redefine the boundaries of ambition.
- The project: Sizewell C (SZC) team is working on one of the most exciting and largest megaprojects in the UK, whilst being at the forefront of the UK’s climate change agenda and energy policy.
- Sizewell C (SZC) will be a 3.2-gigawatt power station generating low-carbon electricity for around 6 million homes, playing a key role in our energy future, supplying reliable, clean electricity for at least 60 years.
Equal Opportunity
- Mace is an inclusive employer and welcomes interest from a diverse range of candidates. Even if you feel you do not fulfil all the criteria, please apply as you may still be the best candidate for this role or another role within our organisation.